System, method and article of manufacture to conserve power in a mobile device by temporarily displaying a scanning code for conducting a cloud-based transaction without unlocking a mobile device

ABSTRACT

Power is conserved in a mobile device having a lock screen wallpaper by: (1) identifying the mobile device is at a business location, (2) temporarily replacing lock screen wallpaper in the mobile device to an image having a scanning code, the scanning code encoding payment information for a cloud-based transaction at the business location, (3) activating a display of the mobile device and rendering the image having the scanning code as the lock screen wallpaper on the activated display of the mobile device which remains in the screen locked state; and (4) conserving power in the mobile device by providing the image having the scanning code as the lock screen wallpaper of the mobile device, without having to unlock the mobile device.

RELATED APPLICATIONS

This application is a Continuation of U.S. application Ser. No.13/896,313 filed May 16, 2013.

BACKGROUND OF THE INVENTION

1. Field of Invention

The present invention relates generally to the field of conserving powerin a mobile device. More specifically, the present invention is relatedto a system, method and article of manufacture to conserve power in amobile device by temporarily displaying a scanning code (e.g., QR code,barcode, etc.) without unlocking a mobile device, the scanning codeencoding payment information for conducting a cloud-based transaction ata business location.

2. Discussion of Related Art

It is well known in the art to utilize a mobile device, such as acellular phone, to conduct financial transactions. As an example, amobile device can be used to pay for financial transaction at a retailestablishment. One such example is discussed below to note some of theproblems associated with the prior art in conducting such financialtransactions.

A retail establishment, e.g., ABC Coffee Shop, may have a software (mayalso be called an application or app) that a user is able to download onhis/her mobile device. Once the software is downloaded and installed bythe user of the mobile device, the user can then power up/open themobile device, click on an icon representative of the software, and runthe software on the mobile device, which may display, as part of therunning software, a scannable barcode. Users are, therefore, able to usethe software installed on the mobile device to conduct a transaction atthe retail establishment, which in this example is the ABC Coffee Shop,by having someone at the retail establishment scan the barcode, whichallows the user to purchase an item (or items) that he/she desires tobuy.

A problem with this scenario is that the user has to go through numeroussteps in order to access the software and pay for a purchase, whichstarts by unlocking the phone, finding the right page having the iconrepresentative of the desired software, clicking on the icon for thedesired software, navigating within the software to the appropriatelocation to load up the barcode that may be used for payment, andpresenting the barcode to the retail establishment. This process is timeconsuming and is also error-prone.

This problem is further compounded for users with numerous softwareapplications that are currently installed on their mobile device, whichmakes it even more difficult and time consuming to locate and run thesoftware. One mechanism provided for in various mobile devices is theability to search for a software among the list of installed software.But, even this approach requires the user to unlock the phone, type thefirst few characters of the software name (if the user can remember thename) and find an appropriate match in the results for the softwarecorresponding to the retail establishment, i.e., the ABC Coffee Shop,run the software, and navigate within the software to the appropriateportion of the software that deals with conducting a transaction. Thisprocess is even more time consuming than the scenario discussedpreviously and is also error-prone.

Embodiments of the present invention are an improvement over prior artsystems and methods.

SUMMARY OF THE INVENTION

In one embodiment, the present invention provides a method to conservepower in a mobile device having a lock screen wallpaper, the methodcomprising: (a) identifying the mobile device is at a business location,(b) temporarily replacing lock screen wallpaper in the mobile device toan image having a scanning code, the scanning code encoding paymentinformation for conducting a cloud-based transaction at the businesslocation, (c) activating a display of the mobile device and renderingthe image having the scanning code as the lock screen wallpaper on theactivated display of the mobile device which remains in the screenlocked state, and (d) conserving power in the mobile device by providingthe image having the scanning code as the lock screen wallpaper of themobile device, without having to unlock the mobile device.

In another embodiment, the present invention provides a method toconserve power in a mobile device comprising: (a) identifying the mobiledevice is at a business location, (b) temporarily replacing lock screenwallpaper in the mobile device to an image having a scanning code, thescanning code encoding payment information for conducting a cloud-basedtransaction at the business location, wherein a payment providerautomatically covers transaction cost with issuer linked funds and, in aseparate transaction, the payment provider charging purchaser'sselected, cloud-linked account in a card-not-present transaction, (c)activating a display of the mobile device and rendering the image havingthe scanning code as the lock screen wallpaper on the activated displayof the mobile device which remains in the screen locked state, and (d)conserving power in the mobile device by providing the image having thescanning code as the lock screen wallpaper of the mobile device, withouthaving to unlock the mobile device.

In yet another embodiment, the present invention provides a mobiledevice comprising: (1) a processor, (2) a display, (3) storage storingcomputer readable programmable code, which when executed by theprocessor implements a method to conserve power in the mobile devicehaving a lock screen wallpaper, the storage comprising computer readableprogram code to: (a) identify the mobile device is at a businesslocation, (b) temporarily replace lock screen wallpaper in the mobiledevice to an image having a scanning code, the scanning code encodingpayment information for conducting a cloud-based transaction at thebusiness location, (c) activate a display of the mobile device andrender the image having the scanning code as the lock screen wallpaperon the activated display of the mobile device which remains in thescreen locked state, and (d) conserve power in the mobile device byproviding the image having the scanning code as the lock screenwallpaper of the mobile device, without having to unlock the mobiledevice.

In another embodiment, the present invention provides a mobile devicecomprising: (1) a processor, (2) a display, (3) storage storing computerreadable programmable code, which when executed by the processorimplements a method to conserve power in the mobile device having a lockscreen wallpaper, the storage comprising computer readable program codeto: (a) identify the mobile device is at a business location, (b)temporarily replace lock screen wallpaper in the mobile device to animage having a scanning code, the scanning code encoding paymentinformation for conducting a cloud-based transaction at the businesslocation, wherein a payment provider automatically covers transactioncost with issuer linked funds and, in a separate transaction, thepayment provider charging purchaser's selected, cloud-linked account ina card-not-present transaction, and (c) activate a display of the mobiledevice and render the image having the scanning code as the lock screenwallpaper on the activated display of the mobile device which remains inthe screen locked state, wherein power is conserved in the mobile deviceby providing the image having the scanning code as the lock screenwallpaper of the mobile device, without having to unlock the mobiledevice.

In yet another embodiment, the present invention discloses an article ofmanufacture comprising non-transitory computer storage medium storingcomputer readable program code which, when executed by a computer,implements a method to conserve power in a mobile device having a lockscreen wallpaper, the medium comprising: (a) computer readable programcode identifying the mobile device is at a business location, (b)computer readable program code temporarily replacing lock screenwallpaper in the mobile device to an image having a scanning code, thescanning code encoding payment information for conducting a cloud-basedtransaction at the business location, and (c) computer readable programcode activating a display of the mobile device and rendering the imagehaving the scanning code as the lock screen wallpaper on the activateddisplay of the mobile device which remains in the screen locked state,wherein power is conserved in the mobile device by providing the imagehaving the scanning code as the lock screen wallpaper of the mobiledevice, without having to unlock the mobile device.

In yet another embodiment, the present invention discloses an article ofmanufacture comprising non-transitory computer storage medium storingcomputer readable program code which, when executed by a computer,implements a method to conserve power in a mobile device having a lockscreen wallpaper, the medium comprising: (a) computer readable programcode identifying the mobile device is at a business location, (b)computer readable program code temporarily replacing lock screenwallpaper in the mobile device to an image having a scanning code, thescanning code encoding payment information for conducting a cloud-basedtransaction at the business location, wherein a payment providerautomatically covers transaction cost with issuer linked funds and, in aseparate transaction, the payment provider charging purchaser'sselected, cloud-linked account in a card-not-present transaction, and(c) computer readable program code activating a display of the mobiledevice and rendering the image having the scanning code as the lockscreen wallpaper on the activated display of the mobile device whichremains in the screen locked state, wherein power is conserved in themobile device by providing the image having the scanning code as thelock screen wallpaper of the mobile device, without having to unlock themobile device.

In one embodiment, the scanning code is a QR code.

In another embodiment, the scanning code is a barcode.

In one embodiment, the present invention further receives an indicationof a completion of the cloud-based transaction based on the displayedscanning code (e.g., QR code, bar code, etc.) and, upon receiving theindication, reverts the lock screen wallpaper to a default lock screenwallpaper.

In another embodiment, the present invention further receives anindication of a completion of the cloud-based transaction based on thedisplayed scanning code (e.g., QR code, bar code, etc.) and, uponreceiving the indication, updates the lock screen wallpaper to anotherimage showing a balance left on an account associated with the scanningcode.

In yet another embodiment, the present invention further reverts thelock screen wallpaper to a default lock screen wallpaper upon leavingthe business location.

In another embodiment, the present invention identifies the mobiledevice as being at the business location based on GPS data.

In another embodiment, the present invention identifies the mobiledevice as being at the business location based upon any of the followinginteractions with a device at the business location: (a) a near fieldcommunication (NFC) interaction (e.g., where the device at the businesslocation being interacted with is an NFC tag, which may either beintegrated into a point-of-sale terminal or is attached to apoint-of-sale terminal at the business location), (b) an RFIDinteraction (e.g., where the device at the business location beinginteracted with is an RFID tag, which may either be integrated into apoint-of-sale terminal or is attached to a point-of-sale terminal at thebusiness location), or (c) a Bluetooth interaction.

In yet another embodiment, the scanning code encodes user definedcustomization data (e.g., details associated with a food or a drink) inaddition to the payment information.

Non-limiting examples of the mobile device include any of the following:a mobile phone, a tablet, a portable gaming device or a digital musicplayer.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an embodiment of the present invention to facilitatea financial transaction without unlocking a mobile device.

FIG. 2 depicts a non-limiting example of a mobile device according tothe present invention.

FIG. 3 depicts an example of an image having the scannable code whereinthe image is rendered as the lock screen wallpaper.

FIG. 4 depicts an example of a default lock screen wallpaper.

FIG. 5 depicts an example where the image having the scanning code iscentered and partially covers the default lock screen wallpaper of FIG.4.

FIG. 6 depicts an example of an image showing the scanning code and anaccount balance.

FIG. 7 depicts an example of a digital receipt shown as part of the lockscreen background.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

While this invention is illustrated and described in a preferredembodiment, the invention may be produced in many differentconfigurations. There is depicted in the drawings, and will herein bedescribed in detail, a preferred embodiment of the invention, with theunderstanding that the present disclosure is to be considered as anexemplification of the principles of the invention and the associatedfunctional specifications for its construction and is not intended tolimit the invention to the embodiment illustrated. Those skilled in theart will envision many other possible variations within the scope of thepresent invention.

FIG. 1 illustrates an embodiment of the present invention whichdiscloses method 100 to facilitate a financial transaction withoutunlocking a mobile device. In step 102, the mobile device is identifiedto be at a business location. In one embodiment, the mobile device isidentified as being located at the business location based on GPS datareceived at the mobile device. In another embodiment, the mobile deviceis identified as being located at the business location based upon anear field communication (NFC) interaction with a device at the businesslocation. For example, the device at the business location may be a NFCtag and the mobile device may interact with such a NFC tag to confirmthat it is located at a particular business location. In yet anotherextended embodiment, the NFC tag is either integrated into apoint-of-sale terminal or is attached to a point-of-sale terminal at thebusiness location.

In another embodiment, the mobile device is identified as being locatedat the business location based on a RFID interaction with a device atthe business location. For example, the device at the business locationmay be a RFID tag and the mobile device may interact with such a RFIDtag to confirm that it is located at a particular business location. Inyet another extended embodiment, the RFID tag is either integrated intoa point-of-sale terminal or is attached to a point-of-sale terminal atthe business location.

In yet another embodiment the mobile device is identified as beinglocated at the business location based on a Bluetooth interaction with adevice at the business location. For example, the device at the businesslocation may be a point-of-sale terminal that can communicate viaBluetooth with the mobile device.

In step 106, a processor in the mobile device dynamically sets a lockscreen wallpaper in the mobile device to an image having a scanning code(e.g., a QR code, a barcode, etc.) for use at the business location theuser is at. It is important to note that the lock screen wallpaper,which is displayed when the mobile device is in a locked state toconserve power, is updated, and not the home screen wallpaper, which isgenerally displayed when a mobile device is not in a locked state.

In step 108, a display of the mobile device is activated and the imagehaving the scannable code is rendered as the lock screen wallpaper onthe activated display of the mobile device which remains in the screenlocked state. Such activation may be user initiated or triggeredautomatically (e.g., when the mobile device is proximate to a point ofsale terminal). FIG. 3 depicts an example of such an image having thescannable code wherein the image is rendered as the lock screenwallpaper.

In step 110, a financial transaction is facilitated at the businesslocation based on the scannable code displayed as the lock screenwallpaper of the mobile device, wherein such a financial transaction isfacilitated without having to unlock the mobile device. For example, theattendant at the point of sale terminal may scan the scannable codedisplayed as the lock screen wallpaper of the mobile device and afinancial transaction could be completed at the point of sale terminalfor an item (or items) the user may wish to purchase at the businesslocation.

In an alternative embodiment, the image having a scanning code (e.g., aQR code, a barcode, etc.) may be rendered in front of a default lockscreen wallpaper (where it visually covers the entirety of the defaultlock screen wallpaper and looks like FIG. 3) or in front of a portion ofthe default lock screen wallpaper (see FIG. 4 for an example of adefault lock screen wallpaper, and FIG. 5 for an example where the imagehaving the scanning code is centered and partially covers the defaultlock screen wallpaper), where the default lock screen wallpaper iseither a custom image previously set by the user of the mobile device oris the system default of the mobile device (the system default image forthe lock screen wallpaper when the user has not previously set the lockscreen wallpaper to a custom image). The point of sale terminal is ableto scan the scannable code to complete a purchase at the businesslocation.

In one embodiment, the method further comprises reverting the lockscreen wallpaper to a default lock screen wallpaper (i.e., a lock screenwallpaper previously set by a user) upon either a successful completionof the financial transaction or upon the user leaving the premises ofthe business location.

In one embodiment, the financial transaction is associated with afinancial account and the method further comprises updating the lockscreen wallpaper to another image showing a balance left on thefinancial account after successful completion of the financialtransaction. After displaying the image showing the balance as the lockscreen wallpaper, the mobile device may revert to a default lock screenwallpaper (i.e., a lock screen wallpaper previously set by a user) uponeither the expiration of a pre-determined time (e.g., a few secondsafter the display of the image showing the balance) or upon the userleaving the premises of the business location.

In one embodiment, the image having a scanning code for use at thebusiness additionally displays a balance associated with a financialaccount (e.g., an account associated with a credit card account, a giftcard, a credit account associated with the business, etc.) which is usedduring the financial transaction. Such an example is shown in FIG. 6which depicts the scanning code and the balance as part of the lockscreen image.

In one embodiment, after successful completion of the financialtransaction, the lock screen wallpaper is updated to display a digitalreceipt as new lock screen wallpaper. Such an example is shown in FIG.7. The digital receipt image may be received from a device at thebusiness location, like a point of sale terminal or may be received overa network such as the Internet or via the cellular network. Afterdisplaying the image showing the digital receipt as the lock screenwallpaper, the mobile device may revert to a default lock screenwallpaper (i.e., a lock screen wallpaper previously set by a user) uponeither the expiration of another pre-determined time (e.g., a fewseconds after the display of the image showing the digital receipt) orupon the user leaving the premises of the business location.

In one embodiment, the scannable code comprises user-definedcustomization data related to the financial transaction in addition toinformation required to perform the financial transaction. For example,the user may have previously stored data identifying order detailsassociated with a drink (e.g., type of drink—coffee/espresso/cappuccino,syrup additives, number of pumps of syrup additives, type of milk to beused to make drink, etc.) or order details associated with a food item(type of toppings on a pizza, requested condiments, etc.) and thispreviously stored information regarding the order details may be encodedinto the scannable code (at either the request of the user or isautomatically identified via a profile storing what was previouslyordered at the business location and is presented to the user forverification prior to being encoded as the scannable code), where thepoint of sale terminal may decode this information and the attendant atthe point of sale terminal can review the order details. Such orderdetails that may be encoded along with information required to perform afinancial transaction may be useful in getting an order correct as it isdirectly from the user and is not based on the attendant at the point ofsale terminal inputting such data, which by definition is error prone.

In one embodiment, the financial transaction is a cloud-basedtransaction, wherein a payment provider automatically covers the cost ofa purchase with issuer linked funds and, in a separate transaction, thepayment provider charging the purchaser's selected, cloud-linked accountin a card-not-present environment to recoup its losses on the firsttransaction.

In one embodiment, the image having a scanning code for use at thebusiness location is generated by a software running on the mobiledevice, wherein the software is associated with the business location.

Non-limiting examples of the mobile device include any of the following:a mobile phone, a tablet, a portable gaming device or a digital musicplayer.

FIG. 2 depicts a non-limiting example of a mobile device 200 accordingto the present invention. While select components (processor 202 memory204, display 206, speaker 208, microphone 210, camera 212, wirelesselectronics 214 required for wireless communication, GPS unit 216) areshown as being part of the mobile device 200, it should be noted thatthese components are provided as a simplistic case scenario and otherknown components (such as, but not limited to, a Bluetooth module, a NFCmodule, a RFID module), may be present within the mobile device 200.Mobile device 200 comprises: a processor 202; a display 206 (e.g. atouch screen display); and memory/storage 204 storing computer readableprogrammable code, which when executed by the processor implements amethod to facilitate a financial transaction without unlocking a mobiledevice, the memory/storage 204 comprising computer readable program codeto: identify the mobile device 200 is at a business location (using forexample, GPS 216); dynamically set lock screen wallpaper in the mobiledevice 200 to an image having a scanning code for use at the businesslocation; activate the display 206 of the mobile device 200 and renderthe image having a scannable code as the lock screen wallpaper on theactivated display 206 of the mobile device 200 which remains in thescreen locked state; and facilitate a financial transaction at thebusiness location based on the scannable code displayed as the lockscreen wallpaper of the mobile device 200, the financial transactionfacilitated without having to unlock the mobile device 200. It should benoted that the mobile device may include any of the following: a mobilephone, a tablet, a portable gaming device or a digital music player.

Additionally, the present invention provides for an article ofmanufacture comprising computer readable program code contained withinimplementing one or more modules to facilitate a financial transactionwithout unlocking a mobile device. Furthermore, the present inventionincludes a computer program code-based product, which is a storagemedium having program code stored therein which can be used to instructa computer/processor to perform any of the methods associated with thepresent invention. The computer storage medium includes any of, but isnot limited to, the following: CD-ROM, DVD, magnetic tape, optical disc,hard drive, floppy disk, to ferroelectric memory, flash memory,ferromagnetic memory, optical storage, charge coupled devices, magneticor optical cards, smart cards, EEPROM, EPROM, RAM, ROM, DRAM, SRAM,SDRAM, or any other appropriate static or dynamic memory or data storagedevices.

The present invention also provides for an article of manufacture havingnon-transitory computer readable storage medium comprising computerreadable program code executable by a processor to implement a method tofacilitate a financial transaction without unlocking a mobile device,the non-transitory computer readable storage medium comprising: computerreadable program code identifying the mobile device is at a businesslocation; computer readable program code dynamically setting lock screenwallpaper in the mobile device to an image having a scanning code (e.g.,a QR code, a barcode, etc.) for use at the business location; computerreadable program code activating a display of the mobile device andrendering the image having a scannable code as the lock screen wallpaperon the activated display of the mobile device which remains in thescreen locked state; and computer readable program code facilitating afinancial transaction at the business location based on the scannablecode displayed as the lock screen wallpaper of the mobile device, thefinancial transaction facilitated without having to unlock the mobiledevice.

CONCLUSION

A system, method and article of manufacture has been shown in the aboveembodiments for the effective implementation of a system, method andarticle of manufacture to conserve power in a mobile device bytemporarily displaying a scanning code for conducting a cloud-basedtransaction without unlocking a mobile device. While various preferredembodiments have been shown and described, it will be understood thatthere is no intent to limit the invention by such disclosure, butrather, it is intended to cover all modifications falling within thespirit and scope of the invention, as defined in the appended claims.For example, the present invention should not be limited bysoftware/program, computing environment, mobile environment, specificcomputing hardware, or specific mobile hardware.

1. A method to conserve power in a mobile device having a lock screenwallpaper, the method comprising: identifying the mobile device is at abusiness location; temporarily replacing lock screen wallpaper in themobile device to an image having a scanning code, the scanning codeencoding payment information for conducting a cloud-based transaction atthe business location; activating a display of the mobile device andrendering the image having the scanning code as the lock screenwallpaper on the activated display of the mobile device which remains inthe screen locked state; and conserving power in the mobile device byproviding the image having the scanning code as the lock screenwallpaper of the mobile device, without having to unlock the mobiledevice.
 2. The method of claim 1, wherein the scanning code is a QRcode.
 3. The method of claim 1, wherein the scanning code is a barcode.4. The method of claim 1, wherein the method further comprises receivingan indication of a completion of the cloud-based transaction and, uponreceiving the indication, reverting the lock screen wallpaper to adefault lock screen wallpaper.
 5. The method of claim 1, wherein themethod further comprises receiving an indication of a completion of thecloud-based transaction and, upon receiving the indication, updating thelock screen wallpaper to another image showing a balance left on anaccount associated with the scanning code.
 6. The method of claim 1,wherein the method further comprises reverting the lock screen wallpaperto a default lock screen wallpaper upon leaving the business location.7. The method of claim 1, wherein the step of identifying the mobiledevice is at the business location is based on GPS data.
 8. The methodof claim 1, wherein the step of identifying the mobile device is at thebusiness location is based upon any of the following interactions with adevice at the business location: (a) a near field communication (NFC)interaction, (b) an RFID interaction, or (c) a Bluetooth interaction. 9.The method of claim 8, wherein step of identifying the mobile device isat the business location is based upon either an NFC or RFID interactionwith a device at the business location, and the device at the businesslocation is an NFC tag in case of NFC interaction or an RFID tag in caseof RFID interaction.
 10. The method of claim 9, wherein the NFC tag orRFID tag is either integrated into a point-of-sale terminal or isattached to a point-of-sale terminal at the business location.
 11. Themethod of claim 1, wherein the scanning code encodes user definedcustomization data in addition to the payment information.
 12. Themethod of claim 1, wherein the mobile device is any of the following: amobile phone, a tablet, a portable gaming device or a digital musicplayer.
 13. A method to conserve power in a mobile device comprising:identifying the mobile device is at a business location; temporarilyreplacing lock screen wallpaper in the mobile device to an image havinga scanning code, the scanning code encoding payment information forconducting a cloud-based transaction at the business location, wherein apayment provider automatically covers transaction cost with issuerlinked funds and, in a separate transaction, the payment providercharging purchaser's selected, cloud-linked account in acard-not-present transaction; activating a display of the mobile deviceand rendering the image having the scanning code as the lock screenwallpaper on the activated display of the mobile device which remains inthe screen locked state; and conserving power in the mobile device byproviding the image having the scanning code as the lock screenwallpaper of the mobile device, without having to unlock the mobiledevice.
 14. The method of claim 13, wherein the scanning code is a QRcode.
 15. The method of claim 13, wherein the scanning code is abarcode.
 16. The method of claim 13, wherein the method furthercomprises receiving an indication of a completion of the cloud-basedtransaction based on the scanning code and, upon receiving theindication, reverting the lock screen wallpaper to a default lock screenwallpaper.
 17. The method of claim 13, wherein the method furthercomprises reverting the lock screen wallpaper to a default lock screenwallpaper upon leaving the business location.
 18. The method of claim13, wherein the step of identifying the mobile device is at the businesslocation is based on GPS data.
 19. The method of claim 13, wherein themobile device is any of the following: a mobile phone, a tablet, aportable gaming device or a digital music player.
 20. A mobile devicecomprising: a processor; a display; storage storing computer readableprogrammable code, which when executed by the processor implements amethod to conserve power in the mobile device having a lock screenwallpaper, the storage comprising computer readable program code to:identify the mobile device is at a business location; temporarilyreplace lock screen wallpaper in the mobile device to an image having ascanning code, the scanning code encoding payment information forconducting a cloud-based transaction at the business location; andactivate a display of the mobile device and render the image having thescanning code as the lock screen wallpaper on the activated display ofthe mobile device which remains in the screen locked state, whereinpower is conserved in the mobile device by providing the image havingthe scanning code as the lock screen wallpaper of the mobile device,without having to unlock the mobile device.
 21. The mobile device ofclaim 20, wherein the scanning code is a QR code.
 22. The mobile deviceof claim 20, wherein the scanning code is a barcode.
 23. The mobiledevice of claim 20, wherein the mobile device is any of the following: amobile phone, a tablet, a portable gaming device or a digital musicplayer.